首先，如果编辑中没有真正的文本，出现了幽灵标题，应该怎样称呼它呢？
第二个问题，有人为Flex文本组件发明了那种特殊的轮子吗？
谢谢 (xièxiè)
鬼/半透明字幕在文本输入框内？
原标题：
最佳回答
It s called a Watermark.
I m not an expert on Flex but here is one example:
http://labs.flexperiments.nl/writing-components-in-flex-part-2/
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